Remote Start erratic

With my remote, I can control the lock, unlock and power liftgate funtions from anwhere in the house, and from a long distance away. The remote start, however, will not work from inside the house, only ten feet from the car (all other functions work, tho). I can be outside, more than 150' feet away with a clear view of the car, and the remote start will work flawlessly. It's the only function on the remote control that doesn't like walls.

When I asked the salesman the same question, the reply was three-part:1. The engine will only run for 10 minutes.2. The car can't be put into gear until the key is turned in the ignition.3. It takes a two-button sequence to initiate remote start.